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The hadoop doesn’t come with any security at it just comes with authorization for good people but not for the bad people wanting to do things so it has authorization at the file system level HDFS is a file system level but the recent versions that are coming for the past 2 3 years support authentication as well authentication if you integrate back with authentication mechanism there the individual user is verified and authenticated and then we allowed to perform many operations on the cluster.But it’s very complex typically they don’t go for just kind of secure clusters but you have an option to integrate with encryption wise HDFS don’t support encryption at this point but using HDFS you can use essential for at least encrypting at the data that is being sent on wire but HDFS doesn’t support encryption at this point but intermediate data that we talked about that can be compressed, compression is different encryption so encryption is not supported in hadoop at this point.